August otto tannenberg



(No Model.

A. 0. TANNENBERG. COMBINED SIDE AND CENTER BRAGE ATTACHMENT FOR STEPLADDERS.

No. 485,900. Patented Nov. 8, 1892.

' INVENTOR flu ll-SZ a 174722362236 g Mi ATTORNEY WITNESSES.-

UNrrnD STATES PATENT Orrrcn.

AUGUST OTTO TANNENBERG, OF NEW ORLEANS, LOUISIANA, ASSIGNOR TO TVILLTAMI-I. BOFINGER, OF SAME PLACE.

COMBINED SIDE AND CENTER BRACE ATTACHMENT FOR STEP-LADDERS.

SPECIFICATION forming part of Letters Patent No. 485,900, dated November8, 1892.

Application filed April 11, 1892. Serial No. 128,698. [No model.)

To all whom it may concern:

Be it known that 1, AUGUST OTTo TANNEN- BERG, a citizen of the UnitedStates, residing at New Orleans, in the parish of Orleans and State ofLouisiana, haveinvented certain new and useful Improvements in aCombined Side and Center Brace Attachment for a Step-Ladder; and I dodeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to an improvement in a combined side and centerbrace attachment for a step-ladder, and its novelty will be fullyunderstood from the following description and claims, when taken inconnection with the annexed drawings; and the objects of my inventionare to provide braces for a stepladder that will enable same to be usedWithout risk of injuring body or limbs of a person, and'at same timeprovide a steady support for the step-ladder. I attain these objects bythe mechanism illustrated in the accompanying drawings, in Which Figurel is a front view. Fig. 2 is a side View. Fig. 3 is a detail front view.Fig. 4. is a detail side view.

Similar letters refer to similar parts throughout the several views.

In the drawings, A refers to the front portion of a step-ladder; B, therear part of a stepladder, which is connected to the front part A bylinks 17, as shown.

C are lateral braces attached on each side of A by means of suitablehinges, and when the step-ladder is in use are drawn out from the sidesof the part A, as seen in the dotted lines in Fig. 1 and as shown inFig. 2, thus giving an increased base for step-ladder.

D are metal braces, which are pivoted between plate E and hinge F, andare provided with slots for engaging a lug or projection on sides ofrear portion of step-ladder B, thus bracing the rear part of step-ladderand preventing it from collapsing or closing when in use. By theprovision of the links I), in conjunction with the front and rear partsA and B and the slotted braces D, it will be perceived that the part Bmay readily be folded against the part A, the said part B being previously disconnected from the brace D by simply lifting the braces upand out of engagement with the lugs.

G are metal arms attached to sides of Aby 5 5 means of pivots or othermeans and are provided with openings or holes a, as shown in Fig. 3, forengaging the headed lugs 01 on the braces O, and will enable said bracesto be retained in a fixed position until disengaged. These holes a areprovided with the offsets c, as shown, to receive the shank of theheaded lugs 01 and prevent a casual disconnection of the arms from thelugs of the braces. At a point on the part A, designated H, I place twoeyes, which are secured in the usual manner and between which the eye Kon brace O rests when the step-ladder is folded or the braces are not inuse, and by simply inserting a piece of wire or nail through eyes H andK a secure fastening is made. The hinges F of braces C are held inposition by means of a pivot rigidly attached to plate E, said pivotalso engaging arms D, which rest on plate E.

In practice the step-ladder is used in the same manner as usual, exceptwhen in position, when the braces O are drawn out and engage the arms Gin the manner shown in Fig. 3, thus giving an increase of base andsteadiness to a step-ladder, while the braces D engage the rear portionof a step-ladder.

A striking advantage of my invention is its economical construction andsecurity from injury oifered in use of same.

Having described my invention and. the manner in which the same is ormay be carried into effect, I would say in conclusion that I do notlimit myself to the precise details herein described, as the same may bevaried to some extent; but

TVhat I claim, and desire to secure by Letters Patent, is

1. In a step-ladder, the combination, with the front part A, the rearpart B, having lateral studs, and the links b, connecting the rear partto the front part, of the braces D, pivotally connected to the frontpart A and having notches or slots in their lower edges at intermediatepoints in their length to ening the holes a at intermediate points inits gage the? lateral lugs of the part B, substanlength provided withthe offsets c, substantially as and for the purpose set forth. tially asand for the purpose set forth.

2. In a step-ladder, the combination, with In testimony whereofIaffix mysignature in 5 the iront part A and the rear part B, connected presenceof two witnesses.

to t e front part, of the lateral braces O, havv r ing their upper endsflexibly connected to I AUGUST OT PO TANNENBERG' the sides of the frontA and also having the Witnesses: lateral headed lugs d and the arms G,pivot- HELMUTH HOLTZ,

IO ally connected to the front part A and hav- PERCY D. PARKS.

